Travis Air Force Base, California --   U.S. Air Force Senior Airman Nicolas Peterson, 860th Aircraft Maintenance Squadron C-17 Globemaster III avionics technician, prepares a C-17 for launch while wearing Mission Oriented Protective Posture equipment at Travis Air Force Base, California, March 7, 2023. The chemical, biological, radiological, nuclear and explosive incident response exercise is designed to provide a realistic environment to test Airmen’s combat response skills. (U.S. Air Force photo by Heide Couch)